| 1 | // A non-blocking everyday NeoPixel strip test program. |
| 2 | |
| 3 | // NEOPIXEL BEST PRACTICES for most reliable operation: |
| 4 | // - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections. |
| 5 | // - MINIMIZE WIRING LENGTH between microcontroller board and first pixel. |
| 6 | // - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR. |
| 7 | // - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS |
| 8 | // connect GROUND (-) first, then +, then data. |
| 9 | // - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip, |
| 10 | // a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED. |
| 11 | // (Skipping these may work OK on your workbench but can fail in the field) |
| 12 | |
| 13 | #include <Adafruit_NeoPixel.h> |
| 14 | #ifdef __AVR__ |
| 15 | #include <avr/power.h> // Required for 16 MHz Adafruit Trinket |
| 16 | #endif |
| 17 | |
| 18 | // Which pin on the Arduino is connected to the NeoPixels? |
| 19 | // On a Trinket or Gemma we suggest changing this to 1: |
| 20 | #ifdef ESP32 |
| 21 | // Cannot use 6 as output for ESP. Pins 6-11 are connected to SPI flash. Use 16 instead. |
| 22 | #define LED_PIN 16 |
| 23 | #else |
| 24 | #define LED_PIN 6 |
| 25 | #endif |
| 26 | |
| 27 | // How many NeoPixels are attached to the Arduino? |
| 28 | #define LED_COUNT 60 |
| 29 | |
| 30 | // Declare our NeoPixel strip object: |
| 31 | Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800); |
| 32 | // Argument 1 = Number of pixels in NeoPixel strip |
| 33 | // Argument 2 = Arduino pin number (most are valid) |
| 34 | // Argument 3 = Pixel type flags, add together as needed: |
| 35 | // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) |
| 36 | // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) |
| 37 | // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) |
| 38 | // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) |
| 39 | // NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products) |
| 40 | |
| 41 | unsigned long pixelPrevious = 0; // Previous Pixel Millis |
| 42 | unsigned long patternPrevious = 0; // Previous Pattern Millis |
| 43 | int patternCurrent = 0; // Current Pattern Number |
| 44 | int patternInterval = 5000; // Pattern Interval (ms) |
| 45 | bool patternComplete = false; |
| 46 | |
| 47 | int pixelInterval = 50; // Pixel Interval (ms) |
| 48 | int pixelQueue = 0; // Pattern Pixel Queue |
| 49 | int pixelCycle = 0; // Pattern Pixel Cycle |
| 50 | uint16_t pixelNumber = LED_COUNT; // Total Number of Pixels |
| 51 | |
| 52 | // setup() function -- runs once at startup -------------------------------- |
| 53 | void setup() { |
| 54 | // These lines are specifically to support the Adafruit Trinket 5V 16 MHz. |
| 55 | // Any other board, you can remove this part (but no harm leaving it): |
| 56 | #if defined(__AVR_ATtiny85__) && (F_CPU == 16000000) |
| 57 | clock_prescale_set(clock_div_1); |
| 58 | #endif |
| 59 | // END of Trinket-specific code. |
| 60 | |
| 61 | strip.begin(); // INITIALIZE NeoPixel strip object (REQUIRED) |
| 62 | strip.show(); // Turn OFF all pixels ASAP |
| 63 | strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255) |
| 64 | } |
| 65 | |
| 66 | // loop() function -- runs repeatedly as long as board is on --------------- |
| 67 | void loop() { |
| 68 | unsigned long currentMillis = millis(); // Update current time |
| 69 | if( patternComplete || (currentMillis - patternPrevious) >= patternInterval) { // Check for expired time |
| 70 | patternComplete = false; |
| 71 | patternPrevious = currentMillis; |
| 72 | patternCurrent++; // Advance to next pattern |
| 73 | if(patternCurrent >= 7) |
| 74 | patternCurrent = 0; |
| 75 | } |
| 76 | |
| 77 | if(currentMillis - pixelPrevious >= pixelInterval) { // Check for expired time |
| 78 | pixelPrevious = currentMillis; // Run current frame |
| 79 | switch (patternCurrent) { |
| 80 | case 7: |
| 81 | theaterChaseRainbow(50); // Rainbow-enhanced theaterChase variant |
| 82 | break; |
| 83 | case 6: |
| 84 | rainbow(10); // Flowing rainbow cycle along the whole strip |
| 85 | break; |
| 86 | case 5: |
| 87 | theaterChase(strip.Color(0, 0, 127), 50); // Blue |
| 88 | break; |
| 89 | case 4: |
| 90 | theaterChase(strip.Color(127, 0, 0), 50); // Red |
| 91 | break; |
| 92 | case 3: |
| 93 | theaterChase(strip.Color(127, 127, 127), 50); // White |
| 94 | break; |
| 95 | case 2: |
| 96 | colorWipe(strip.Color(0, 0, 255), 50); // Blue |
| 97 | break; |
| 98 | case 1: |
| 99 | colorWipe(strip.Color(0, 255, 0), 50); // Green |
| 100 | break; |
| 101 | default: |
| 102 | colorWipe(strip.Color(255, 0, 0), 50); // Red |
| 103 | break; |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | // Some functions of our own for creating animated effects ----------------- |
| 109 | |
| 110 | // Fill strip pixels one after another with a color. Strip is NOT cleared |
| 111 | // first; anything there will be covered pixel by pixel. Pass in color |
| 112 | // (as a single 'packed' 32-bit value, which you can get by calling |
| 113 | // strip.Color(red, green, blue) as shown in the loop() function above), |
| 114 | // and a delay time (in milliseconds) between pixels. |
| 115 | void colorWipe(uint32_t color, int wait) { |
| 116 | static uint16_t current_pixel = 0; |
| 117 | pixelInterval = wait; // Update delay time |
| 118 | strip.setPixelColor(current_pixel++, color); // Set pixel's color (in RAM) |
| 119 | strip.show(); // Update strip to match |
| 120 | if(current_pixel >= pixelNumber) { // Loop the pattern from the first LED |
| 121 | current_pixel = 0; |
| 122 | patternComplete = true; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | // Theater-marquee-style chasing lights. Pass in a color (32-bit value, |
| 127 | // a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms) |
| 128 | // between frames. |
| 129 | void theaterChase(uint32_t color, int wait) { |
| 130 | static uint32_t loop_count = 0; |
| 131 | static uint16_t current_pixel = 0; |
| 132 | |
| 133 | pixelInterval = wait; // Update delay time |
| 134 | |
| 135 | strip.clear(); |
| 136 | |
| 137 | for(int c=current_pixel; c < pixelNumber; c += 3) { |
| 138 | strip.setPixelColor(c, color); |
| 139 | } |
| 140 | strip.show(); |
| 141 | |
| 142 | current_pixel++; |
| 143 | if (current_pixel >= 3) { |
| 144 | current_pixel = 0; |
| 145 | loop_count++; |
| 146 | } |
| 147 | |
| 148 | if (loop_count >= 10) { |
| 149 | current_pixel = 0; |
| 150 | loop_count = 0; |
| 151 | patternComplete = true; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | // Rainbow cycle along whole strip. Pass delay time (in ms) between frames. |
| 156 | void rainbow(uint8_t wait) { |
| 157 | if(pixelInterval != wait) |
| 158 | pixelInterval = wait; |
| 159 | for(uint16_t i=0; i < pixelNumber; i++) { |
| 160 | strip.setPixelColor(i, Wheel((i + pixelCycle) & 255)); // Update delay time |
| 161 | } |
| 162 | strip.show(); // Update strip to match |
| 163 | pixelCycle++; // Advance current cycle |
| 164 | if(pixelCycle >= 256) |
| 165 | pixelCycle = 0; // Loop the cycle back to the begining |
| 166 | } |
| 167 | |
| 168 | //Theatre-style crawling lights with rainbow effect |
| 169 | void theaterChaseRainbow(uint8_t wait) { |
| 170 | if(pixelInterval != wait) |
| 171 | pixelInterval = wait; // Update delay time |
| 172 | for(int i=0; i < pixelNumber; i+=3) { |
| 173 | strip.setPixelColor(i + pixelQueue, Wheel((i + pixelCycle) % 255)); // Update delay time |
| 174 | } |
| 175 | strip.show(); |
| 176 | for(int i=0; i < pixelNumber; i+=3) { |
| 177 | strip.setPixelColor(i + pixelQueue, strip.Color(0, 0, 0)); // Update delay time |
| 178 | } |
| 179 | pixelQueue++; // Advance current queue |
| 180 | pixelCycle++; // Advance current cycle |
| 181 | if(pixelQueue >= 3) |
| 182 | pixelQueue = 0; // Loop |
| 183 | if(pixelCycle >= 256) |
| 184 | pixelCycle = 0; // Loop |
| 185 | } |
| 186 | |
| 187 | // Input a value 0 to 255 to get a color value. |
| 188 | // The colours are a transition r - g - b - back to r. |
| 189 | uint32_t Wheel(byte WheelPos) { |
| 190 | WheelPos = 255 - WheelPos; |
| 191 | if(WheelPos < 85) { |
| 192 | return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); |
| 193 | } |
| 194 | if(WheelPos < 170) { |
| 195 | WheelPos -= 85; |
| 196 | return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); |
| 197 | } |
| 198 | WheelPos -= 170; |
| 199 | return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); |
| 200 | } |